#include <stdio.h>


int main()
{
  int year = 1000;
  for (year = 1000; year <= 2000; year++)
  {
    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
    {
      printf("%d\n", year);

    }
  }
  return 0;
}
